I have a 30-meter raster that represents 10 land areas of different sizes. Each of these areas is composed of a variety of surface materials.. e.g. grass, cement, pavement, dirt, trees etc in different proportions. I know the proportions which these surface materials occur within each area, but I don't know the exact spatial location of the materials.. so, what I would like to do is create another raster layer that randomly distributes the surface material within each of the 10 land areas.
I am using ArcGIS 10.3 for Desktop.